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Title: Projection-viewer for microscale aerial photography
Author: Aldrich, Robert C.; von Mosch, James; Greentree, Wallace
Source: Res. Note PSW-RN-277. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p
Station ID: RN-PSW-277
Description: A low-cost projection-viewer has been developed to enlarge portions of microscale aerial photographs. These pictures can be used for interpretation or mapping, or for comparison with existing photographs, maps, and overlays to monitor environmental changes. The projection-viewer can enlarge from 2.5 to 20 times, and can be calibrated so that maps may be drawn with a minimum of distortion.
Keywords: aerial photographs; forest surveys; photoprojectors
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Aldrich, Robert C.; von Mosch, James; Greentree, Wallace 1972. Projection-viewer for microscale aerial photography. Res. Note PSW-RN-277. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 4 p.
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